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3666a04883
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
91 lines
2.9 KiB
Plaintext
91 lines
2.9 KiB
Plaintext
# Copyright (C) 2016-2021 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the GDB testsuite. It is used to verify that
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# GDB does not recurse infinitely when calling gdb.parse_and_eval() in
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# the course of sniffing a frame in a Python unwinder.
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# The unwinder has been constructed so that, should recursion occur,
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# it will be detected in the unwinder so that we won't need to wait
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# for a timeout.
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load_lib gdb-python.exp
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standard_testfile
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if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
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return -1
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}
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# Skip all tests if Python scripting is not enabled.
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if { [skip_python_tests] } { continue }
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set pyfile [gdb_remote_download host ${srcdir}/${subdir}/${testfile}.py]
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gdb_test "source ${pyfile}" "Python script imported" \
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"import python scripts"
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# The following tests require execution.
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if ![runto_main] then {
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fail "can't run to main"
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return 0
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}
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proc cont_and_backtrace { tst } {
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with_test_prefix $tst {
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gdb_breakpoint "ccc"
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# We're testing different code paths within the unwinder's sniffer.
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# Set the current path to be tested here.
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gdb_test_no_output "python TestUnwinder.set_test(\"$tst\")" \
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"set code path within python unwinder to $tst"
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# If the unwinder is active, the usage count will increment while
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# running to the breakpoint. Reset it prior to doing the backtrace.
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gdb_test_no_output "python TestUnwinder.reset_count()" \
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"reset count"
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gdb_continue_to_breakpoint "ccc"
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# The python based unwinder should be called a number of times while
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# generating the backtrace, but its sniffer always returns None. So
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# it doesn't really contribute to generating any of the frames below.
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#
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# But that's okay. Our goal here is to make sure that GDB doesn't
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# get hung up in potentially infinite recursion when invoking the
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# Python-based unwinder.
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gdb_test_sequence "bt" "backtrace" {
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"\\r\\n#0 .* ccc \\(arg=789\\) at "
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"\\r\\n#1 .* bbb \\(arg=456\\) at "
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"\\r\\n#2 .* aaa \\(arg=123\\) at "
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"\\r\\n#3 .* main \\(.*\\) at"
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}
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# Test that the python-based unwinder / sniffer was actually called
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# during generation of the backtrace.
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gdb_test "python print(TestUnwinder.count > 0)" "True" \
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"python unwinder called"
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}
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}
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cont_and_backtrace "check_undefined_symbol"
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cont_and_backtrace "check_user_reg_pc"
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cont_and_backtrace "check_pae_pc"
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